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Diffstat (limited to 'sdc-distribution-client/src/main/java/org/onap/sdc/utils/heat/HeatParser.java')
-rw-r--r-- | sdc-distribution-client/src/main/java/org/onap/sdc/utils/heat/HeatParser.java | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sdc-distribution-client/src/main/java/org/onap/sdc/utils/heat/HeatParser.java b/sdc-distribution-client/src/main/java/org/onap/sdc/utils/heat/HeatParser.java new file mode 100644 index 0000000..340a59d --- /dev/null +++ b/sdc-distribution-client/src/main/java/org/onap/sdc/utils/heat/HeatParser.java @@ -0,0 +1,75 @@ +/*- + * ============LICENSE_START======================================================= + * sdc-distribution-client + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END========================================================= + */ + +package org.onap.sdc.utils.heat; + +import java.util.Map; + +import org.onap.sdc.utils.YamlToObjectConverter; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class HeatParser { + + private static Logger log = LoggerFactory.getLogger(HeatParser.class.getName()); + + + /** + * Parses and returns the contents of the "parameters" section of YAML-formatted HEAT template. + * + * @param heatFileContents - the string contents of HEAT template + * @return map of parameter name to HeatParameter object. + * For the following YAML snippet: + * <b>parameters: + * image_name_1: + * type: string + * label: Image Name + * description: SCOIMAGE Specify an image name for instance1 + * default: cirros-0.3.1-x86_64 + * </b> + * the map with one entry will be returned, the key will be "image_name_1". + * For a HeatParameter object, getConstraints() returns the list of all constraints, + * regardless of constraint type. + * For that reason, for each constraint type a sugaring function were added on the HeatParameter type, + * for example getLengthConstraint(). A correct way to fetch the "length" constraint values map would be + * parameter.getLengthConstraint().getLength(). Same logic was implemented for all other constraint types. + * + * In case of parse error, null will be returned. + * + */ + public Map<String, HeatParameter> getHeatParameters(String heatFileContents){ + log.debug("Start of extracting HEAT parameters from file, file contents: {}", heatFileContents); + Map<String, HeatParameter> heatParameters = null; + YamlToObjectConverter yamlToObjectConverter = new YamlToObjectConverter(); + HeatConfiguration heatConfiguration = yamlToObjectConverter.convertFromString(heatFileContents, HeatConfiguration.class); + if (heatConfiguration != null){ + heatParameters = heatConfiguration.getParameters(); + } else { + log.error("Couldn't parse HEAT template."); + } + if (heatParameters != null && heatParameters.size() > 0){ + System.out.println("Found HEAT parameters: "+heatParameters.toString()); + log.debug("Found HEAT parameters: {}", heatParameters.toString()); + } else { + log.warn("HEAT template parameters section wasn't found or is empty."); + } + return heatParameters; + } +} |